/*  Pcsx2 - Pc Ps2 Emulator
 *  Copyright (C) 2002-2008  Pcsx2 Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

#include <stdio.h>
#include <string.h>

#include "R5900.h"

//DECODE PROCUDURES

//cop0
#define DECODE_FS           (DECODE_RD)
#define DECODE_FT           (DECODE_RT)
#define DECODE_FD           (DECODE_SA)
///********

#define DECODE_FUNCTION     ((cpuRegs.code) & 0x3F)
#define DECODE_RD     ((cpuRegs.code >> 11) & 0x1F) // The rd part of the instruction register 
#define DECODE_RT     ((cpuRegs.code >> 16) & 0x1F) // The rt part of the instruction register 
#define DECODE_RS     ((cpuRegs.code >> 21) & 0x1F) // The rs part of the instruction register 
#define DECODE_SA     ((cpuRegs.code >>  6) & 0x1F) // The sa part of the instruction register
#define DECODE_IMMED     ( cpuRegs.code & 0xFFFF)      // The immediate part of the instruction register
#define DECODE_OFFSET  ((((short)DECODE_IMMED * 4) + opcode_addr + 4))
#define DECODE_JUMP     (opcode_addr & 0xf0000000)|((cpuRegs.code&0x3ffffff)<<2)
#define DECODE_SYSCALL      ((opcode_addr & 0x03FFFFFF) >> 6)
#define DECODE_BREAK        (DECODE_SYSCALL)
#define DECODE_C0BC         ((cpuRegs.code >> 16) & 0x03)
#define DECODE_C1BC         ((cpuRegs.code >> 16) & 0x03)
#define DECODE_C2BC         ((cpuRegs.code >> 16) & 0x03)   

//IOP

#define DECODE_RD_IOP     ((psxRegs.code >> 11) & 0x1F) 
#define DECODE_RT_IOP     ((psxRegs.code >> 16) & 0x1F) 
#define DECODE_RS_IOP     ((psxRegs.code >> 21) & 0x1F) 
#define DECODE_IMMED_IOP   ( psxRegs.code & 0xFFFF)  
#define DECODE_SA_IOP    ((psxRegs.code >>  6) & 0x1F)
#define DECODE_FS_IOP           (DECODE_RD_IOP)

